{"id":4395,"date":"2024-12-05T09:07:22","date_gmt":"2024-12-05T08:07:22","guid":{"rendered":"https:\/\/staging.esb-group.com\/hot-rolled-micro-alloyed-steels-according-to-vda-239-100\/"},"modified":"2025-04-09T07:55:40","modified_gmt":"2025-04-09T06:55:40","slug":"hot-rolled-micro-alloyed-steels-according-to-vda-239-100","status":"publish","type":"page","link":"https:\/\/www.esb-group.com\/en\/products-vda-239-100\/hot-rolled-micro-alloyed-steels-according-to-vda-239-100\/","title":{"rendered":"Hot-rolled micro-alloyed steels according to VDA 239-100"},"content":{"rendered":"\n<div class=\"wp-block-uagb-container uagb-block-8de8518f alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<figure class=\"wp-block-table is-style-regular\"><table><thead><tr><th>Quality<\/th><th>Surface type<\/th><th><\/th><\/tr><\/thead><tbody><tr><td>HR210LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR240LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR270LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR300LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR340LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR380LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR420LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR460LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR500LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR550LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR600LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR650LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><tr><td>HR700LA<\/td><td>Surface for non-outer skin parts &#8211; &#8220;U&#8221;, Unexposed<\/td><td>Details<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-uagb-separator uagb-block-e3a1df8c\"><div class=\"wp-block-uagb-separator__inner\" style=\"--my-background-image:\"><\/div><\/div>\n\n\n\n<p>Hot-rolled micro-alloyed steels in accordance with the <strong>VDA 239-100<\/strong> standard are an essential component of modern lightweight construction concepts in the automotive and mechanical engineering industries. Their outstanding properties make them ideal for applications where high strength, good formability and optimized weldability are required. <br\/><br\/><strong>Definition and classification<br\/><\/strong>Microalloyed steels obtain their mechanical properties through small additions of alloying elements such as niobium (Nb), titanium (Ti) and vanadium (V). These elements act as grain refiners and promote the precipitation of carbides, nitrides or carbonitrides, which increase strength while maintaining good ductility. In the VDA 239-100 standard, hot-rolled micro-alloyed steels are classified according to the following characteristics:  <\/p>\n\n\n\n<div class=\"wp-block-uagb-icon-list uagb-block-c38c444d\"><div class=\"uagb-icon-list__wrap\">\n<div class=\"wp-block-uagb-icon-list-child uagb-block-20f60847\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M256 0C114.6 0 0 114.6 0 256c0 141.4 114.6 256 256 256s256-114.6 256-256C512 114.6 397.4 0 256 0zM406.6 278.6l-103.1 103.1c-12.5 12.5-32.75 12.5-45.25 0s-12.5-32.75 0-45.25L306.8 288H128C110.3 288 96 273.7 96 256s14.31-32 32-32h178.8l-49.38-49.38c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l103.1 103.1C414.6 241.3 416 251.1 416 256C416 260.9 414.6 270.7 406.6 278.6z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>Rolling type<\/strong>: HR (hot rolled) for hot rolled<\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-icon-list-child uagb-block-074775ea\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M256 0C114.6 0 0 114.6 0 256c0 141.4 114.6 256 256 256s256-114.6 256-256C512 114.6 397.4 0 256 0zM406.6 278.6l-103.1 103.1c-12.5 12.5-32.75 12.5-45.25 0s-12.5-32.75 0-45.25L306.8 288H128C110.3 288 96 273.7 96 256s14.31-32 32-32h178.8l-49.38-49.38c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l103.1 103.1C414.6 241.3 416 251.1 416 256C416 260.9 414.6 270.7 406.6 278.6z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>Minimum yield strength (Rp0.2)<\/strong> in MPa<\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-icon-list-child uagb-block-3011b287\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M256 0C114.6 0 0 114.6 0 256c0 141.4 114.6 256 256 256s256-114.6 256-256C512 114.6 397.4 0 256 0zM406.6 278.6l-103.1 103.1c-12.5 12.5-32.75 12.5-45.25 0s-12.5-32.75 0-45.25L306.8 288H128C110.3 288 96 273.7 96 256s14.31-32 32-32h178.8l-49.38-49.38c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l103.1 103.1C414.6 241.3 416 251.1 416 256C416 260.9 414.6 270.7 406.6 278.6z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>Steel type<\/strong>: LA (low-alloyed) for low-alloyed or micro-alloyed<\/span><\/div>\n<\/div><\/div>\n\n\n\n<p>One example of such a steel grade is <strong>HR500LA<\/strong>, a hot-rolled steel with a minimum yield strength of 500 MPa, which is suitable for structurally critical applications.<br\/><br\/><strong>Properties and advantages<\/strong><br\/>Hot-rolled microalloyed steels are characterized by a combination of high strength, good toughness and economical workability. The main advantages of these materials are <\/p>\n\n\n\n<div class=\"wp-block-uagb-icon-list uagb-block-f6126695\"><div class=\"uagb-icon-list__wrap\">\n<div class=\"wp-block-uagb-icon-list-child uagb-block-24c9e257\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M256 0C114.6 0 0 114.6 0 256c0 141.4 114.6 256 256 256s256-114.6 256-256C512 114.6 397.4 0 256 0zM406.6 278.6l-103.1 103.1c-12.5 12.5-32.75 12.5-45.25 0s-12.5-32.75 0-45.25L306.8 288H128C110.3 288 96 273.7 96 256s14.31-32 32-32h178.8l-49.38-49.38c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l103.1 103.1C414.6 241.3 416 251.1 416 256C416 260.9 414.6 270.7 406.6 278.6z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>High strength and low weight<\/strong>: This allows material thicknesses to be reduced without compromising structural integrity.<\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-icon-list-child uagb-block-8d76c403\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M256 0C114.6 0 0 114.6 0 256c0 141.4 114.6 256 256 256s256-114.6 256-256C512 114.6 397.4 0 256 0zM406.6 278.6l-103.1 103.1c-12.5 12.5-32.75 12.5-45.25 0s-12.5-32.75 0-45.25L306.8 288H128C110.3 288 96 273.7 96 256s14.31-32 32-32h178.8l-49.38-49.38c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l103.1 103.1C414.6 241.3 416 251.1 416 256C416 260.9 414.6 270.7 406.6 278.6z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>Good formability<\/strong>: Despite their high strength, microalloyed steels exhibit excellent forming properties, which are required for applications with complex geometries.<\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-icon-list-child uagb-block-455873b8\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M256 0C114.6 0 0 114.6 0 256c0 141.4 114.6 256 256 256s256-114.6 256-256C512 114.6 397.4 0 256 0zM406.6 278.6l-103.1 103.1c-12.5 12.5-32.75 12.5-45.25 0s-12.5-32.75 0-45.25L306.8 288H128C110.3 288 96 273.7 96 256s14.31-32 32-32h178.8l-49.38-49.38c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l103.1 103.1C414.6 241.3 416 251.1 416 256C416 260.9 414.6 270.7 406.6 278.6z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>Optimized welding properties<\/strong>: The low carbon content and the micro-alloyed additives significantly improve the weldability.<\/span><\/div>\n<\/div><\/div>\n\n\n\n<p><strong>Production and process control<\/strong><br\/>Hot-rolled microalloyed steels are produced using a controlled rolling process in which the microstructure is specifically adapted. The addition of alloying elements such as <strong>calcium (Ca)<\/strong> or <strong>rare earth metals<\/strong> (e.g. cerium) enables the shape and distribution of the sulphide inclusions to be controlled. This improves edge elongation and fatigue strength, especially for safety-relevant components.  <br\/><br\/><strong>Areas of application<\/strong><br\/>Hot-rolled micro-alloyed steels are typically used in the automotive industry and in agricultural machinery. Examples include <\/p>\n\n\n\n<div class=\"wp-block-uagb-icon-list uagb-block-88442dcc\"><div class=\"uagb-icon-list__wrap\">\n<div class=\"wp-block-uagb-icon-list-child uagb-block-98450559\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M256 0C114.6 0 0 114.6 0 256c0 141.4 114.6 256 256 256s256-114.6 256-256C512 114.6 397.4 0 256 0zM406.6 278.6l-103.1 103.1c-12.5 12.5-32.75 12.5-45.25 0s-12.5-32.75 0-45.25L306.8 288H128C110.3 288 96 273.7 96 256s14.31-32 32-32h178.8l-49.38-49.38c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l103.1 103.1C414.6 241.3 416 251.1 416 256C416 260.9 414.6 270.7 406.6 278.6z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>Car wheels<\/strong>: High load capacity with reduced weight<\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-icon-list-child uagb-block-e80786f8\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M256 0C114.6 0 0 114.6 0 256c0 141.4 114.6 256 256 256s256-114.6 256-256C512 114.6 397.4 0 256 0zM406.6 278.6l-103.1 103.1c-12.5 12.5-32.75 12.5-45.25 0s-12.5-32.75 0-45.25L306.8 288H128C110.3 288 96 273.7 96 256s14.31-32 32-32h178.8l-49.38-49.38c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l103.1 103.1C414.6 241.3 416 251.1 416 256C416 260.9 414.6 270.7 406.6 278.6z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>Safety belt buckles<\/strong>: a combination of strength and precision<\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-icon-list-child uagb-block-e299ea86\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M256 0C114.6 0 0 114.6 0 256c0 141.4 114.6 256 256 256s256-114.6 256-256C512 114.6 397.4 0 256 0zM406.6 278.6l-103.1 103.1c-12.5 12.5-32.75 12.5-45.25 0s-12.5-32.75 0-45.25L306.8 288H128C110.3 288 96 273.7 96 256s14.31-32 32-32h178.8l-49.38-49.38c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l103.1 103.1C414.6 241.3 416 251.1 416 256C416 260.9 414.6 270.7 406.6 278.6z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>Profiles and seat structures<\/strong>: Optimized safety and comfort<\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-icon-list-child uagb-block-df276f0a\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M256 0C114.6 0 0 114.6 0 256c0 141.4 114.6 256 256 256s256-114.6 256-256C512 114.6 397.4 0 256 0zM406.6 278.6l-103.1 103.1c-12.5 12.5-32.75 12.5-45.25 0s-12.5-32.75 0-45.25L306.8 288H128C110.3 288 96 273.7 96 256s14.31-32 32-32h178.8l-49.38-49.38c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l103.1 103.1C414.6 241.3 416 251.1 416 256C416 260.9 414.6 270.7 406.6 278.6z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>Agricultural equipment<\/strong>: abrasion resistance and durability<\/span><\/div>\n<\/div><\/div>\n\n\n\n<p><strong>Summary<\/strong><br\/>Hot-rolled microalloyed steels in accordance with VDA 239-100 offer an excellent balance between strength, formability and workability. Their versatile properties and adaptability to specific requirements make them a key component in modern production technology. With their wide range of applications, they make a significant contribution to more efficient and sustainable production.  <\/p>\n\n\n\n<div class=\"wp-block-uagb-separator uagb-block-b14085db\"><div class=\"wp-block-uagb-separator__inner\" style=\"--my-background-image:\"><\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-e776c7c0\">\n<div class=\"wp-block-uagb-info-box uagb-block-bb13f507 uagb-infobox__content-wrap  uagb-infobox-icon-above-title uagb-infobox-image-valign-top\"><div class=\"uagb-ifb-content\"><div class=\"uagb-ifb-icon-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\"><path d=\"M144 480C64.47 480 0 415.5 0 336C0 273.2 40.17 219.8 96.2 200.1C96.07 197.4 96 194.7 96 192C96 103.6 167.6 32 256 32C315.3 32 367 64.25 394.7 112.2C409.9 101.1 428.3 96 448 96C501 96 544 138.1 544 192C544 204.2 541.7 215.8 537.6 226.6C596 238.4 640 290.1 640 352C640 422.7 582.7 480 512 480H144zM303 392.1C312.4 402.3 327.6 402.3 336.1 392.1L416.1 312.1C426.3 303.6 426.3 288.4 416.1 279C407.6 269.7 392.4 269.7 383 279L344 318.1V184C344 170.7 333.3 160 320 160C306.7 160 296 170.7 296 184V318.1L256.1 279C247.6 269.7 232.4 269.7 223 279C213.7 288.4 213.7 303.6 223 312.1L303 392.1z\"><\/path><\/svg><\/div><div class=\"uagb-ifb-title-wrap\"><h3 class=\"uagb-ifb-title\">Quality Guide Download: Hot-rolled micro-alloyed steels according to VDA 239-100<\/h3><\/div><p class=\"uagb-ifb-desc\">Behind this download you will find our ESB Quality Guide (data sheet) for hot-rolled micro-alloyed steels according to VDA 239-100.<\/p><div class=\"uagb-ifb-button-wrapper wp-block-button\"><a href=\"https:\/\/www.esb-group.com\/wp-content\/uploads\/2025\/03\/ESB-Quality-Guide-V1.1-VDA239-100.pdf\" class=\"uagb-infobox-cta-link wp-block-button__link\" target=\"_blank\" rel=\"noopener noreferrer\" onclick=\"return true;\" alt=\"\"><span class=\"uagb-inline-editing\">QG DOWNLOAD<\/span><\/a><\/div><\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-separator uagb-block-a70733bc\"><div class=\"wp-block-uagb-separator__inner\" style=\"--my-background-image:\"><\/div><\/div>\n<\/div><\/div>\n<div class=\"contact-block\"><div class=\"single-contact-image\"><img decoding=\"async\" class=\"single-contact-image\"\n                src=\"https:\/\/www.esb-group.com\/wp-content\/uploads\/2025\/11\/A7C4963-Alex_Bachmann_2025.10.11-1890x1260.jpg\"\n                srcset=\"https:\/\/www.esb-group.com\/wp-content\/uploads\/2025\/11\/A7C4963-Alex_Bachmann_2025.10.11-1890x1260.jpg 1x,\n                        https:\/\/www.esb-group.com\/wp-content\/uploads\/2025\/11\/A7C4963-Alex_Bachmann_2025.10.11-1890x1260.jpg 2x\"\n                sizes=\"(max-width: 1024px) 100vw, 945px\"\n                width=\"945\" height=\"630\"\n                alt=\"Alex Bachmann\"><\/div>\n        <div><h6>Ihr Ansprechpartner<\/h6>\n        <h4 class=\"single-contact-name\">Alex Bachmann<\/h4><p class=\"single-contact-telephone\"><span class=\"contact-icon1\"><svg width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n<g clip-path=\"url(#clip0_131_943)\">\n<path d=\"M12 0H4C2.93913 0 1.92172 0.421427 1.17157 1.17157C0.421427 1.92172 0 2.93913 0 4L0 5C0 5.26522 0.105357 5.51957 0.292893 5.70711C0.48043 5.89464 0.734784 6 1 6H4C4.26522 6 4.51957 5.89464 4.70711 5.70711C4.89464 5.51957 5 5.26522 5 5V3H11V5C11 5.26522 11.1054 5.51957 11.2929 5.70711C11.4804 5.89464 11.7348 6 12 6H15C15.2652 6 15.5196 5.89464 15.7071 5.70711C15.8946 5.51957 16 5.26522 16 5V4C16 2.93913 15.5786 1.92172 14.8284 1.17157C14.0783 0.421427 13.0609 0 12 0Z\" fill=\"currentColor\"\/>\n<path d=\"M12.707 8.293C12.5195 8.10545 12.2652 8.00006 12 8H4C3.73481 8.00006 3.48049 8.10545 3.293 8.293L0.293 11.293C0.105451 11.4805 5.66374e-05 11.7348 0 12L0 14C0 14.5304 0.210714 15.0391 0.585786 15.4142C0.960859 15.7893 1.46957 16 2 16H14C14.5304 16 15.0391 15.7893 15.4142 15.4142C15.7893 15.0391 16 14.5304 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